cdma2000

Code Division Multiple Access 2000: A third generation (3G) wireless system, cdma2000 is a trademark of Qualcomm, the company that commercialized CDMA. cdma2000 essentially is the CDMA approach to IMT-2000, the ITU's concept for a single, global standard for 3G wireless technology. Based on earlier CDMA versions (also known as TIA/EIA IS-95a and IS-95b), cdma2000 (also known as IS-2000) has been approved by the ITU. The initial version, known as cdma2000 1xMC (one times Multi-channel), offers 3G capabilities within a single standard 1.25 MHz channel, effectively doubling the voice capacity of the predecessor cdmaOne systems and offering data speeds up to 307 Kbps. The high-speed version is known officially as cdma2000 3xMC (Three times Multi-Carrier), as it makes use of three standard 1.25 MHz channels within a 5 MHz band to deliver data speeds up to 2 Mbps in support of integrated voice, data and video. cdma2000 runs in the 800 MHz and 1.8-2.0 GHz spectrum.